22992540 has 48 divisors (see below), whose sum is σ = 66125472. Its totient is φ = 5965056.

The previous prime is 22992539. The next prime is 22992559. The reversal of 22992540 is 4529922.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2959 + ... + 7398.

It is an arithmetic number, because the mean of its divisors is an integer number (1377614).

Almost surely, 2^22992540 is an apocalyptic number.

22992540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22992540 is an abundant number, since it is smaller than the sum of its proper divisors (43132932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22992540 is a wasteful number, since it uses less digits than its factorization.

22992540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10406 (or 10404 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 22992540 is about 4795.0537014720. The cubic root of 22992540 is about 284.3559479246.

It can be divided in two parts, 22992 and 540, that added together give a palindrome (23532).

The spelling of 22992540 in words is "twenty-two million, nine hundred ninety-two thousand, five hundred forty".